From a5885435d63d72f03e48be6e8b26582ce6487bfb Mon Sep 17 00:00:00 2001
From: kalaposfos13 <153381648+kalaposfos13@users.noreply.github.com>
Date: Thu, 14 May 2026 22:00:42 +0200
Subject: [PATCH] Assert on attempting to login the same user more than once
 (#4416)

---
 src/core/user_manager.cpp | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/src/core/user_manager.cpp b/src/core/user_manager.cpp
index b13593b30..6f94e8b12 100644
--- a/src/core/user_manager.cpp
+++ b/src/core/user_manager.cpp
@@ -3,6 +3,7 @@
 
 #include <filesystem>
 #include <iostream>
+#include <common/assert.h>
 #include <common/path_util.h>
 #include "emulator_settings.h"
 #include "libraries/system/userservice.h"
@@ -200,9 +201,7 @@ void UserManager::LoginUser(User* u, s32 player_index) {
     }
 
     for (auto& logged_in_user : logged_in_users) {
-        if (logged_in_user == u) {
-            logged_in_user = nullptr;
-        }
+        ASSERT(logged_in_user != u);
     }
 
     u->logged_in = true;